Ryzen 7 7840U vs Pentium 4405Y

Primary details

Comparing Pentium 4405Y and Ryzen 7 7840U processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking	2383	383
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Pentium	AMD Phoenix (Zen 4, Ryzen 7040)
Architecture codename	Skylake (2015−2016)	Phoenix-U (Zen 4)
Release date	1 September 2015 (8 years ago)	May 2023 (1 year ago)
Launch price (MSRP)	$161	no data
Current price	$469 (2.9x MSRP)	no data

Detailed specifications

Pentium 4405Y and Ryzen 7 7840U basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	2 (Dual-core)	8 (Octa-Core)
Threads	4	16
Base clock speed	1.5 GHz	3.3 GHz
Boost clock speed	1.5 GHz	5.1 GHz
L1 cache	128 KB	64K (per core)
L2 cache	512 KB	1 MB (per core)
L3 cache	2 MB	16 MB (shared)
Chip lithography	14 nm	4 nm
Die size	99 mm2	178 mm2
Maximum core temperature	100 °C	100 °C
Number of transistors	1750 Million	25,000 million
64 bit support	+	+
Windows 11 compatibility	-	+
Unlocked multiplier	No	No

Compatibility

Information on Pentium 4405Y and Ryzen 7 7840U compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	1	1
Socket	FCBGA1515	FP8
Power consumption (TDP)	6 Watt	28 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Pentium 4405Y and Ryzen 7 7840U. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2	no data
AES-NI	+	+
AVX	+	+
Enhanced SpeedStep (EIST)	+	no data
My WiFi	+	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	+	no data
TSX	-	no data
Idle States	+	no data
Thermal Monitoring	+	no data
Flex Memory Access	+	no data
SIPP	-	no data
Smart Response	+	no data
Status	Discontinued	no data

Security technologies

Pentium 4405Y and Ryzen 7 7840U technologies aimed at improving security, for example, by protecting against hacks.

TXT	-	no data
EDB	+	no data
Secure Key	+	no data
MPX	-	no data
Identity Protection	+	no data
SGX	Yes with Intel® ME	no data
OS Guard	-	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Pentium 4405Y and Ryzen 7 7840U are enumerated here.

AMD-V	+	+
VT-d	+	no data
VT-x	+	no data
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Pentium 4405Y and Ryzen 7 7840U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR5-5600
Maximum memory size	16 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	29.8 GB/s	no data
ECC memory support	-	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	Intel HD Graphics 515	AMD Radeon 780M
Max video memory	16 GB	no data
Quick Sync Video	+	no data
Clear Video	+	no data
Clear Video HD	+	no data
Graphics max frequency	800 MHz	no data

Graphics interfaces

Available interfaces and connections of Pentium 4405Y and Ryzen 7 7840U integrated GPUs.

Number of displays supported	3	no data
eDP	+	no data
DisplayPort	+	no data
HDMI	+	no data
DVI	+	no data

Graphics image quality

Maximum display resolutions supported by Pentium 4405Y and Ryzen 7 7840U integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	no data
Max resolution over HDMI 1.4	4096x2304@24Hz	no data
Max resolution over eDP	3840x2160@60Hz	no data
Max resolution over DisplayPort	3840x2160@60Hz	no data
Max resolution over VGA	N/A	no data

Graphics API support

APIs supported by Pentium 4405Y and Ryzen 7 7840U integrated GPUs, sometimes API versions are included.

DirectX	12	no data
OpenGL	4.4	no data

Peripherals

Specifications and connection of peripherals supported by Pentium 4405Y and Ryzen 7 7840U.

PCIe version	3.0	4.0
PCI Express lanes	10	20

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

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Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Ryzen 7 7840U outperforms Pentium 4405Y by 1532% based on our aggregate benchmark results.

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Pros & cons summary

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Performance score	0.99	16.16
Integrated graphics card	1.36	18.36
Physical cores	2	8
Threads	4	16
Chip lithography	14 nm	4 nm
Power consumption (TDP)	6 Watt	28 Watt

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Should you still have questions on choice between Pentium 4405Y and Ryzen 7 7840U, ask them in Comments section, and we shall answer.

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